<pre>
interface{}
</pre>

<p>
For convenience, the predeclared type <code>any</code> is an alias for the empty interface.
[<a href="#Go_1.18">Go 1.18</a>]
</p>

<p>
Similarly, consider this interface specification,
which appears within a <a href="#Type_declarations">type declaration</a>
to define an interface called <code>Locker</code>:
</p>

<pre>
type Locker interface {
	Lock()